Vigorish

Vigorish, or simply the vig, also known as juice, the cut or the take, is the amount charged by a bookmaker, or bookie, for his services. In the United States it also means the interest on a shark's loan. The term is Yiddish slang originating from the Russian word for winnings, выигрыш vyigrysh. Bookmakers use this practice to make money on their wagers regardless of the outcome. To minimize their risk, bookmakers do not want to have an interest in either side winning in a given sporting event. They are interested, instead, in getting equal betting on both outcomes of the event. In this way, the bookmaker minimizes his risk and always collects a small commission from the vigorish. The bookmaker will normally adjust the odds or the line, to attract equal action on each side of an event.